Daravabdos the Shaker

Eminence - Whenever you cast another Elemental spell, if Daravabdos the Shaker is in
the command zone or on the battlefield, you may search your library for a basic land card, put it into your hand, then shuffle your library.
You may play any number of lands each turn.
"It is long past the time this threat should have been defeated. You will have our aid."